Correct spelling "mininum" to "minimum", "conroller" to "controller"
and "explicitely" to "explicitly" in
Documentation/kernel-parameters.txt

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>